Affiliation:
1. Massachusetts Institute of Technology, Cambridge, Mass.
Abstract
Abstract
It is postulated that fracture occurs in an elastic-plastic, nonwork-hardening material subject to pure shear when a critical shear strain is attained throughout a critical volume of material. This postulate is combined with the classical equations of plasticity to predict when cracking will initiate from a notch at nominal shear stresses below the yield stress, when the crack will become unstable on increase of stress, and when unstable cracking will occur if a notch is cut while a constant nominal stress is maintained. Tests on aluminum foil under biaxial tensile stress show results similar to those predicted by the theory.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
61 articles.
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